Secrets from the past point to rapid climate change in the future

Click here to access article by Patrick Lynch from NASA.

The human-caused release of increased carbon dioxide into the atmosphere...presents climate scientists with something they've never seen in the 65 million year record of carbon dioxide levels — a drastic rate of increase that makes it difficult to predict how rapidly the Earth will respond.

..."Humans have overwhelmed the natural, slow changes that occur on geologic timescales," Hansen said.